- Branche: Weather
- Number of terms: 60695
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The American Meteorological Society promotes the development and dissemination of information and education on the atmospheric and related oceanic and hydrologic sciences and the advancement of their professional applications. Founded in 1919, AMS has a membership of more than 14,000 professionals, ...
In meteorology, a deviation of the weather or climate from the conditions normally expected at a particular time and place; a deviation from the normal.
Industry:Weather
(Obsolete. ) An air current moving away from either of the earth's poles.
Industry:Weather
Rain or thundersqualls of the frontal type experienced mainly from May through August near the Abrolhos Islands (18°S) off the coast of Brazil.
Industry:Weather
The horizontal coordinate in a two-dimensional system of rectangular Cartesian coordinates; usually denoted by x; also, the horizontal axis of any graph.
Industry:Weather
1. With respect to atmospheric motions, refers to an absolute coordinate system; for example, absolute vorticity as distinguished from relative vorticity. 2. In climatology, the highest or lowest recorded value of a meteorological element, whether at a single station or over an area, during a given period. It is most frequently applied to extremes of temperature: absolute maximum is the highest recorded shade temperature; absolute minimum is the lowest recorded. 3. See Kelvin temperature scale.
Industry:Weather
1. All processes that remove snow, ice, or water from a glacier, snowfield, etc. ; in this sense, the opposite of accumulation. These processes include melting, evaporation, calving, wind erosion, and an avalanche. Air temperature is the dominant factor in controlling ablation, precipitation amounts exercising only secondary control. During the ablation season (usually summer), an ablation rate of about 2 mm h−1 is typical of glaciers in a temperate climate. 2. The amount of snow or ice removed by the above-described processes; in this sense, the opposite of accumulation.
Industry:Weather
That portion of a glacier surface below the firn line where ablation exceeds accumulation; the opposite of accumulation area.
Industry:Weather
Development of a hypothesis to explain observations; frequently used in diagnostic expert systems; can lead to false conclusions. For example, a particular instance of wind destruction by a microburst might be initially ascribed to a tornado. Compare deduction, induction.
Industry:Weather
